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<h2><span class="refentrytitle"><a name="json-glib-Serializable-Interface.top_of_page"></a>Serializable Interface</span></h2>
<p>Serializable Interface — Interface for serialize and deserialize special GObjects</p>
</td>
<td valign="top" align="right"></td>
</tr></table></div>
<div class="refsynopsisdiv">
<a name="json-glib-Serializable-Interface.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis">struct              <a class="link" href="json-glib-Serializable-Interface.html#JsonSerializableIface" title="struct JsonSerializableIface">JsonSerializableIface</a>;
<a class="link" href="json-glib-JSON-Node.html#JsonNode" title="JsonNode"><span class="returnvalue">JsonNode</span></a> *          <a class="link" href="json-glib-Serializable-Interface.html#json-serializable-serialize-property" title="json_serializable_serialize_property ()">json_serializable_serialize_property</a>
                                                        (<em class="parameter"><code><span class="type">JsonSerializable</span> *serializable</code></em>,
                                                         <em class="parameter"><code>const <span class="type">gchar</span> *property_name</code></em>,
                                                         <em class="parameter"><code>const <span class="type">GValue</span> *value</code></em>,
                                                         <em class="parameter"><code><span class="type">GParamSpec</span> *pspec</code></em>);
<span class="returnvalue">gboolean</span>            <a class="link" href="json-glib-Serializable-Interface.html#json-serializable-deserialize-property" title="json_serializable_deserialize_property ()">json_serializable_deserialize_property</a>
                                                        (<em class="parameter"><code><span class="type">JsonSerializable</span> *serializable</code></em>,
                                                         <em class="parameter"><code>const <span class="type">gchar</span> *property_name</code></em>,
                                                         <em class="parameter"><code><span class="type">GValue</span> *value</code></em>,
                                                         <em class="parameter"><code><span class="type">GParamSpec</span> *pspec</code></em>,
                                                         <em class="parameter"><code><a class="link" href="json-glib-JSON-Node.html#JsonNode" title="JsonNode"><span class="type">JsonNode</span></a> *property_node</code></em>);
<span class="returnvalue">GParamSpec</span> *        <a class="link" href="json-glib-Serializable-Interface.html#json-serializable-find-property" title="json_serializable_find_property ()">json_serializable_find_property</a>     (<em class="parameter"><code><span class="type">JsonSerializable</span> *serializable</code></em>,
                                                         <em class="parameter"><code>const <span class="type">char</span> *name</code></em>);
<span class="returnvalue">void</span>                <a class="link" href="json-glib-Serializable-Interface.html#json-serializable-get-property" title="json_serializable_get_property ()">json_serializable_get_property</a>      (<em class="parameter"><code><span class="type">JsonSerializable</span> *serializable</code></em>,
                                                         <em class="parameter"><code><span class="type">GParamSpec</span> *pspec</code></em>,
                                                         <em class="parameter"><code><span class="type">GValue</span> *value</code></em>);
<span class="returnvalue">GParamSpec</span> **       <a class="link" href="json-glib-Serializable-Interface.html#json-serializable-list-properties" title="json_serializable_list_properties ()">json_serializable_list_properties</a>   (<em class="parameter"><code><span class="type">JsonSerializable</span> *serializable</code></em>,
                                                         <em class="parameter"><code><span class="type">guint</span> *n_pspecs</code></em>);
<span class="returnvalue">void</span>                <a class="link" href="json-glib-Serializable-Interface.html#json-serializable-set-property" title="json_serializable_set_property ()">json_serializable_set_property</a>      (<em class="parameter"><code><span class="type">JsonSerializable</span> *serializable</code></em>,
                                                         <em class="parameter"><code><span class="type">GParamSpec</span> *pspec</code></em>,
                                                         <em class="parameter"><code>const <span class="type">GValue</span> *value</code></em>);

<a class="link" href="json-glib-JSON-Node.html#JsonNode" title="JsonNode"><span class="returnvalue">JsonNode</span></a> *          <a class="link" href="json-glib-Serializable-Interface.html#json-serializable-default-serialize-property" title="json_serializable_default_serialize_property ()">json_serializable_default_serialize_property</a>
                                                        (<em class="parameter"><code><span class="type">JsonSerializable</span> *serializable</code></em>,
                                                         <em class="parameter"><code>const <span class="type">gchar</span> *property_name</code></em>,
                                                         <em class="parameter"><code>const <span class="type">GValue</span> *value</code></em>,
                                                         <em class="parameter"><code><span class="type">GParamSpec</span> *pspec</code></em>);
<span class="returnvalue">gboolean</span>            <a class="link" href="json-glib-Serializable-Interface.html#json-serializable-default-deserialize-property" title="json_serializable_default_deserialize_property ()">json_serializable_default_deserialize_property</a>
                                                        (<em class="parameter"><code><span class="type">JsonSerializable</span> *serializable</code></em>,
                                                         <em class="parameter"><code>const <span class="type">gchar</span> *property_name</code></em>,
                                                         <em class="parameter"><code><span class="type">GValue</span> *value</code></em>,
                                                         <em class="parameter"><code><span class="type">GParamSpec</span> *pspec</code></em>,
                                                         <em class="parameter"><code><a class="link" href="json-glib-JSON-Node.html#JsonNode" title="JsonNode"><span class="type">JsonNode</span></a> *property_node</code></em>);
</pre>
</div>
<div class="refsect1">
<a name="json-glib-Serializable-Interface.description"></a><h2>Description</h2>
<p>
<span class="type">JsonSerializable</span> is an interface for <span class="type">GObject</span> classes that
allows controlling how the class is going to be serialized
or deserialized by <a class="link" href="json-glib-GObject-Serialization.html#json-construct-gobject" title="json_construct_gobject ()"><code class="function">json_construct_gobject()</code></a> and
<a class="link" href="json-glib-GObject-Serialization.html#json-serialize-gobject" title="json_serialize_gobject ()"><code class="function">json_serialize_gobject()</code></a> respectively.
</p>
</div>
<div class="refsect1">
<a name="json-glib-Serializable-Interface.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="JsonSerializableIface"></a><h3>struct JsonSerializableIface</h3>
<pre class="programlisting">struct JsonSerializableIface {
  JsonNode *(* serialize_property)   (JsonSerializable *serializable,
                                      const gchar      *property_name,
                                      const GValue     *value,
                                      GParamSpec       *pspec);
  gboolean  (* deserialize_property) (JsonSerializable *serializable,
                                      const gchar      *property_name,
                                      GValue           *value,
                                      GParamSpec       *pspec,
                                      JsonNode         *property_node);

  GParamSpec * (* find_property)       (JsonSerializable *serializable,
                                        const char       *name);
  GParamSpec **(* list_properties)     (JsonSerializable *serializable,
                                        guint            *n_pspecs);
  void         (* set_property)        (JsonSerializable *serializable,
                                        GParamSpec       *pspec,
                                        const GValue     *value);
  void         (* get_property)        (JsonSerializable *serializable,
                                        GParamSpec       *pspec,
                                        GValue           *value);
};
</pre>
<p>
Interface that allows serializing and deserializing <span class="type">GObject</span>s
with properties storing complex data types. The <a class="link" href="json-glib-GObject-Serialization.html#json-serialize-gobject" title="json_serialize_gobject ()"><code class="function">json_serialize_gobject()</code></a>
function will check if the passed <span class="type">GObject</span> implements this interface,
so it can also be used to override the default property serialization
sequence.
</p>
<div class="variablelist"><table border="0">
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<tbody>
<tr>
<td><p><span class="term"><em class="structfield"><code><a name="JsonSerializableIface.serialize-property"></a>serialize_property</code></em> ()</span></p></td>
<td>virtual function for serializing a <span class="type">GObject</span> property
into a <a class="link" href="json-glib-JSON-Node.html#JsonNode" title="JsonNode"><span class="type">JsonNode</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="structfield"><code><a name="JsonSerializableIface.deserialize-property"></a>deserialize_property</code></em> ()</span></p></td>
<td>virtual function for deserializing a <a class="link" href="json-glib-JSON-Node.html#JsonNode" title="JsonNode"><span class="type">JsonNode</span></a>
into a <span class="type">GObject</span> property</td>
</tr>
<tr>
<td><p><span class="term"><em class="structfield"><code><a name="JsonSerializableIface.find-property"></a>find_property</code></em> ()</span></p></td>
<td>virtual function for finding a property definition using
its name</td>
</tr>
<tr>
<td><p><span class="term"><em class="structfield"><code><a name="JsonSerializableIface.list-properties"></a>list_properties</code></em> ()</span></p></td>
<td>virtual function for listing the installed property
definitions</td>
</tr>
<tr>
<td><p><span class="term"><em class="structfield"><code><a name="JsonSerializableIface.set-property"></a>set_property</code></em> ()</span></p></td>
<td>virtual function for setting a property</td>
</tr>
<tr>
<td><p><span class="term"><em class="structfield"><code><a name="JsonSerializableIface.get-property"></a>get_property</code></em> ()</span></p></td>
<td>virtual function for getting a property</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="json-serializable-serialize-property"></a><h3>json_serializable_serialize_property ()</h3>
<pre class="programlisting"><a class="link" href="json-glib-JSON-Node.html#JsonNode" title="JsonNode"><span class="returnvalue">JsonNode</span></a> *          json_serializable_serialize_property
                                                        (<em class="parameter"><code><span class="type">JsonSerializable</span> *serializable</code></em>,
                                                         <em class="parameter"><code>const <span class="type">gchar</span> *property_name</code></em>,
                                                         <em class="parameter"><code>const <span class="type">GValue</span> *value</code></em>,
                                                         <em class="parameter"><code><span class="type">GParamSpec</span> *pspec</code></em>);</pre>
<p>
Asks a <span class="type">JsonSerializable</span> implementation to serialize a <span class="type">GObject</span>
property into a <a class="link" href="json-glib-JSON-Node.html#JsonNode" title="JsonNode"><span class="type">JsonNode</span></a> object.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>serializable</code></em> :</span></p></td>
<td>a <span class="type">JsonSerializable</span> object</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>property_name</code></em> :</span></p></td>
<td>the name of the property</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td>
<td>the value of the property</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>pspec</code></em> :</span></p></td>
<td>a <span class="type">GParamSpec</span>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a <a class="link" href="json-glib-JSON-Node.html#JsonNode" title="JsonNode"><span class="type">JsonNode</span></a> containing the serialized property</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="json-serializable-deserialize-property"></a><h3>json_serializable_deserialize_property ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>            json_serializable_deserialize_property
                                                        (<em class="parameter"><code><span class="type">JsonSerializable</span> *serializable</code></em>,
                                                         <em class="parameter"><code>const <span class="type">gchar</span> *property_name</code></em>,
                                                         <em class="parameter"><code><span class="type">GValue</span> *value</code></em>,
                                                         <em class="parameter"><code><span class="type">GParamSpec</span> *pspec</code></em>,
                                                         <em class="parameter"><code><a class="link" href="json-glib-JSON-Node.html#JsonNode" title="JsonNode"><span class="type">JsonNode</span></a> *property_node</code></em>);</pre>
<p>
Asks a <span class="type">JsonSerializable</span> implementation to deserialize the
property contained inside <em class="parameter"><code>property_node</code></em> into <em class="parameter"><code>value</code></em>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>serializable</code></em> :</span></p></td>
<td>a <span class="type">JsonSerializable</span>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>property_name</code></em> :</span></p></td>
<td>the name of the property</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td>
<td>a pointer to an uninitialized <span class="type">GValue</span>. <span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>pspec</code></em> :</span></p></td>
<td>a <span class="type">GParamSpec</span>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>property_node</code></em> :</span></p></td>
<td>a <a class="link" href="json-glib-JSON-Node.html#JsonNode" title="JsonNode"><span class="type">JsonNode</span></a> containing the serialized property</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>
<code class="literal">TRUE</code> if the property was successfully deserialized.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="json-serializable-find-property"></a><h3>json_serializable_find_property ()</h3>
<pre class="programlisting"><span class="returnvalue">GParamSpec</span> *        json_serializable_find_property     (<em class="parameter"><code><span class="type">JsonSerializable</span> *serializable</code></em>,
                                                         <em class="parameter"><code>const <span class="type">char</span> *name</code></em>);</pre>
<p>
FIXME
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>serializable</code></em> :</span></p></td>
<td>a <span class="type">JsonSerializable</span>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>name</code></em> :</span></p></td>
<td>the name of the property</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the <span class="type">GParamSpec</span> for the property
or <a href="/home/ebassi/gnome3/install/share/gtk-doc/html/liboil/liboil-liboiljunk.html#NULL--CAPS"><code class="literal">NULL</code></a> if no property was found. <span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span>
</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.14</p>
</div>
<hr>
<div class="refsect2">
<a name="json-serializable-get-property"></a><h3>json_serializable_get_property ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>                json_serializable_get_property      (<em class="parameter"><code><span class="type">JsonSerializable</span> *serializable</code></em>,
                                                         <em class="parameter"><code><span class="type">GParamSpec</span> *pspec</code></em>,
                                                         <em class="parameter"><code><span class="type">GValue</span> *value</code></em>);</pre>
</div>
<hr>
<div class="refsect2">
<a name="json-serializable-list-properties"></a><h3>json_serializable_list_properties ()</h3>
<pre class="programlisting"><span class="returnvalue">GParamSpec</span> **       json_serializable_list_properties   (<em class="parameter"><code><span class="type">JsonSerializable</span> *serializable</code></em>,
                                                         <em class="parameter"><code><span class="type">guint</span> *n_pspecs</code></em>);</pre>
<p>
FIXME
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>serializable</code></em> :</span></p></td>
<td>a <span class="type">JsonSerializable</span>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>n_pspecs</code></em> :</span></p></td>
<td>return location for the length of the array
of <span class="type">GParamSpec</span> returned by the function. <span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>an array
of <span class="type">GParamSpec</span>. Use <code class="function">g_free()</code> to free the array when done. <span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=n_pspecs][<acronym title="Free data container after the code is done."><span class="acronym">transfer container</span></acronym>]</span>
</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.14</p>
</div>
<hr>
<div class="refsect2">
<a name="json-serializable-set-property"></a><h3>json_serializable_set_property ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>                json_serializable_set_property      (<em class="parameter"><code><span class="type">JsonSerializable</span> *serializable</code></em>,
                                                         <em class="parameter"><code><span class="type">GParamSpec</span> *pspec</code></em>,
                                                         <em class="parameter"><code>const <span class="type">GValue</span> *value</code></em>);</pre>
</div>
<hr>
<div class="refsect2">
<a name="json-serializable-default-serialize-property"></a><h3>json_serializable_default_serialize_property ()</h3>
<pre class="programlisting"><a class="link" href="json-glib-JSON-Node.html#JsonNode" title="JsonNode"><span class="returnvalue">JsonNode</span></a> *          json_serializable_default_serialize_property
                                                        (<em class="parameter"><code><span class="type">JsonSerializable</span> *serializable</code></em>,
                                                         <em class="parameter"><code>const <span class="type">gchar</span> *property_name</code></em>,
                                                         <em class="parameter"><code>const <span class="type">GValue</span> *value</code></em>,
                                                         <em class="parameter"><code><span class="type">GParamSpec</span> *pspec</code></em>);</pre>
<p>
Calls the default implementation of the <span class="type">JsonSerializable</span>
<code class="function">serialize_property()</code> virtual function
</p>
<p>
This function can be used inside a custom implementation
of the <code class="function">serialize_property()</code> virtual function in lieu of:
</p>
<p>
</p>
<div class="informalexample">
  <table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
    <tbody>
      <tr>
        <td class="listing_lines" align="right"><pre>1
2
3
4
5
6
7</pre></td>
        <td class="listing_code"><pre class="programlisting"><span class="usertype">JsonSerializable</span><span class="normal"> </span><span class="symbol">*</span><span class="normal">iface</span><span class="symbol">;</span>
<span class="usertype">JsonNode</span><span class="normal"> </span><span class="symbol">*</span><span class="normal">node</span><span class="symbol">;</span>

<span class="normal">iface </span><span class="symbol">=</span><span class="normal"> </span><span class="function">g_type_default_interface_peek</span><span class="normal"> </span><span class="symbol">(</span><span class="normal">JSON_TYPE_SERIALIZABLE</span><span class="symbol">);</span>
<span class="normal">node </span><span class="symbol">=</span><span class="normal"> iface</span><span class="symbol">-&gt;</span><span class="function">serialize_property</span><span class="normal"> </span><span class="symbol">(</span><span class="normal">serializable</span><span class="symbol">,</span><span class="normal"> property_name</span><span class="symbol">,</span>
<span class="normal">                                  value</span><span class="symbol">,</span>
<span class="normal">                                  pspec</span><span class="symbol">);</span></pre></td>
      </tr>
    </tbody>
  </table>
</div>

<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>serializable</code></em> :</span></p></td>
<td>a <span class="type">JsonSerializable</span> object</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>property_name</code></em> :</span></p></td>
<td>the name of the property</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td>
<td>the value of the property</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>pspec</code></em> :</span></p></td>
<td>a <span class="type">GParamSpec</span>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a <a class="link" href="json-glib-JSON-Node.html#JsonNode" title="JsonNode"><span class="type">JsonNode</span></a> containing the serialized
property. <span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span>
</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.10</p>
</div>
<hr>
<div class="refsect2">
<a name="json-serializable-default-deserialize-property"></a><h3>json_serializable_default_deserialize_property ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>            json_serializable_default_deserialize_property
                                                        (<em class="parameter"><code><span class="type">JsonSerializable</span> *serializable</code></em>,
                                                         <em class="parameter"><code>const <span class="type">gchar</span> *property_name</code></em>,
                                                         <em class="parameter"><code><span class="type">GValue</span> *value</code></em>,
                                                         <em class="parameter"><code><span class="type">GParamSpec</span> *pspec</code></em>,
                                                         <em class="parameter"><code><a class="link" href="json-glib-JSON-Node.html#JsonNode" title="JsonNode"><span class="type">JsonNode</span></a> *property_node</code></em>);</pre>
<p>
Calls the default implementation of the <span class="type">JsonSerializable</span>
<code class="function">deserialize_property()</code> virtual function
</p>
<p>
This function can be used inside a custom implementation
of the <code class="function">deserialize_property()</code> virtual function in lieu of:
</p>
<p>
</p>
<div class="informalexample">
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        <td class="listing_lines" align="right"><pre>1
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        <td class="listing_code"><pre class="programlisting"><span class="usertype">JsonSerializable</span><span class="normal"> </span><span class="symbol">*</span><span class="normal">iface</span><span class="symbol">;</span>
<span class="usertype">gboolean</span><span class="normal"> res</span><span class="symbol">;</span>

<span class="normal">iface </span><span class="symbol">=</span><span class="normal"> </span><span class="function">g_type_default_interface_peek</span><span class="normal"> </span><span class="symbol">(</span><span class="normal">JSON_TYPE_SERIALIZABLE</span><span class="symbol">);</span>
<span class="normal">res </span><span class="symbol">=</span><span class="normal"> iface</span><span class="symbol">-&gt;</span><span class="function">deserialize_property</span><span class="normal"> </span><span class="symbol">(</span><span class="normal">serializable</span><span class="symbol">,</span><span class="normal"> property_name</span><span class="symbol">,</span>
<span class="normal">                                   value</span><span class="symbol">,</span>
<span class="normal">                                   pspec</span><span class="symbol">,</span>
<span class="normal">                                   property_node</span><span class="symbol">);</span></pre></td>
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<p>
</p>
<div class="variablelist"><table border="0">
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<td><p><span class="term"><em class="parameter"><code>serializable</code></em> :</span></p></td>
<td>a <span class="type">JsonSerializable</span>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>property_name</code></em> :</span></p></td>
<td>the name of the property</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td>
<td>a pointer to an uninitialized <span class="type">GValue</span>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>pspec</code></em> :</span></p></td>
<td>a <span class="type">GParamSpec</span>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>property_node</code></em> :</span></p></td>
<td>a <a class="link" href="json-glib-JSON-Node.html#JsonNode" title="JsonNode"><span class="type">JsonNode</span></a> containing the serialized property</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>
<code class="literal">TRUE</code> if the property was successfully deserialized.</td>
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</table></div>
<p class="since">Since 0.10</p>
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